linux-kernel - Re: [PATCH 10/13] x86/microcode/AMD: Check patch level only on the BSP

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Date:   Tue, 17 Jan 2017 21:43:02 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Borislav Petkov <bp@...en8.de>
cc:     X86 ML <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10/13] x86/microcode/AMD: Check patch level only on the
 BSP

On Tue, 17 Jan 2017, Borislav Petkov wrote:

> From: Borislav Petkov <bp@...e.de>
> 
> Check final patch levels for AMD only on the BSP. This way, we decide
> early and only once whether to continue loading or to leave the loader
> disabled on such systems.
> 
> Simplify a lot.
> 
> Signed-off-by: Borislav Petkov <bp@...e.de>
>  void __init load_ucode_bsp(void)
>  {
> -	unsigned int vendor, cpuid_1_eax;
> +	unsigned int cpuid_1_eax;
>  
>  	if (check_loader_disabled_bsp())
>  		return;
>  
> -	vendor	    = x86_cpuid_vendor();
>  	cpuid_1_eax = native_cpuid_eax(1);
>  
> -	switch (vendor) {
> +	switch (x86_cpuid_vendor()) {
>  	case X86_VENDOR_INTEL:
>  		if (x86_family(cpuid_1_eax) >= 6)
>  			load_ucode_intel_bsp();
> @@ -155,15 +195,14 @@ static bool check_loader_disabled_ap(void)
>  
>  void load_ucode_ap(void)
>  {
> -	unsigned int vendor, cpuid_1_eax;
> +	unsigned int cpuid_1_eax;
>  
>  	if (check_loader_disabled_ap())
>  		return;
>  
> -	vendor	    = x86_cpuid_vendor();
>  	cpuid_1_eax = native_cpuid_eax(1);
>  
> -	switch (vendor) {
> +	switch (x86_cpuid_vendor()) {
>  	case X86_VENDOR_INTEL:
>  		if (x86_family(cpuid_1_eax) >= 6)
>  			load_ucode_intel_ap();

These two hunks look unrelated to $subject. Please seperate them out.

Thanks,

	tglx